Problem for creating route with OpenStreetMap in Garmin connect ?

Hi,

In Garmin connect, when I want to create a route, there is no problem when I select Google map. When switching the map (using Openstreetmap), I 'm able to add the first waypoint (Starting point) but when I want to add the second waypoint, the message is “Loading…” and it blocks .

Is there an add-on needed ? I tried on Mozilla and Internet explorer…

thanks